I just want to emphasize and support what Michael has just mentioned.
It's extremely difficult for a developer to support non standard customization to his/her application. We should all be thankful in the first place, that we are actually able to do that, and everyone trying these custom modifications should be well aware that they can break the application's functionality.
With that said (and although I've no previous HTML knowledge, just general programming background) you are welcome to ask me anything for this custom ui and I'll do my best (if I can) to make it happen :)